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igb: Support sending custom Ethernet FCS.

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Including bad FCS, used generate frames with bad FCS
to test other system's handling of RX of bad packets.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Ben Greear 2012-03-06 09:41:53 +00:00 committed by Jeff Kirsher
parent 126a3fd251
commit 6b8f092284
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/intel/igb/igb_main.c
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@ -1964,6 +1964,8 @@ static int __devinit igb_probe(struct pci_dev *pdev,
NETIF_F_IPV6_CSUM |
NETIF_F_SG;
netdev->priv_flags |= IFF_SUPP_NOFCS;
if (pci_using_dac) {
netdev->features |= NETIF_F_HIGHDMA;
netdev->vlan_features |= NETIF_F_HIGHDMA;
@ -4293,6 +4295,8 @@ static void igb_tx_map(struct igb_ring *tx_ring,
/* write last descriptor with RS and EOP bits */
cmd_type |= cpu_to_le32(size) | cpu_to_le32(IGB_TXD_DCMD);
if (unlikely(skb->no_fcs))
cmd_type &= ~(cpu_to_le32(E1000_ADVTXD_DCMD_IFCS));
tx_desc->read.cmd_type_len = cmd_type;
/* set the timestamp */